Remove data outliers

Remove data outliers based on the interquartile range.

Usage

removeOutliers(x, k = 1.5)

Arguments

x

vector of data.

k

factor to applied to the interquartile range (default = 1.5).

Value

A numeric vector with the same length as input vector.

Details

The interquartile range IQR is computed from input dataset as IQR = Q3 - Q1, where Q1 is 25th percentile and Q3 is the 75th percentile. Values larger than Q3 + k * IQR and smaller than Q1 - k * IQR are deemed as outliers and substituted with NA's.

The default value of k is 1.5.

Examples

mydata <- c(-10 * runif(10), runif(10))
removeOutliers(mydata)
#>  [1] -0.80750138 -8.34333037 -6.00760886 -1.57208442 -0.07399441 -4.66393497
#>  [7] -4.97777389 -2.89767245 -7.32881987 -7.72521511  0.87460066  0.17494063
#> [13]  0.03424133  0.32038573  0.40232824  0.19566983  0.40353812  0.06366146
#> [19]  0.38870131  0.97554784